| 摘要 |
PURPOSE:To easily adjust sound volume in the voice guidance of a route. CONSTITUTION:At the time of supplying the guiding voice of the route to a speaker 34a, a voice control part 30 separates the speaker 34a from audio 40 and outputs the guiding voice from here. Also, input for sound volume adjustment is inputted by displaying an adjustment screen on a display part 28 and by touching the screen. Further, at the time of switching signals to the speaker 34a by the voice control part 30, since a mute circuit 40a is operated, voice output is switched in a state with no voice output. |
